212122110221211 has 16 divisors (see below), whose sum is σ = 299466822155904. Its totient is φ = 133096086639744.

The previous prime is 212122110221207. The next prime is 212122110221249. The reversal of 212122110221211 is 112122011221212.

212122110221211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212122110221211 - 2² = 212122110221207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212122110221291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70634256 + ... + 73576098.

It is an arithmetic number, because the mean of its divisors is an integer number (18716676384744).

Almost surely, 2^{212122110221211} is an apocalyptic number.

212122110221211 is a deficient number, since it is larger than the sum of its proper divisors (87344711934693).

212122110221211 is a wasteful number, since it uses less digits than its factorization.

212122110221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355690.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212122110221211 its reverse (112122011221212), we get a palindrome (324244121442423).

The spelling of 212122110221211 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, two hundred eleven".